Natural History Museum: Hymenoptera Section   cc-by

Osmia (Mason Bees) is a genus of Hymenoptera in the family Megachilidae. They visit flowers of Corydalis repens, lanceleaf springbeauty, Humboldt County milkvetch, and Chick Lupine.

EOL has data for 16 attributes, including:

Known occurrences, collected specimens and observations of Mason Bees. View this species on GBIF